Aluminum Corrosion Question

I know that in the past aluminum bodied cars were notorious for experiencing corrosion at places where steel bolts were connected.
The electrolysis that occurs from combining two different metals would result in terrible corrosion/melding of the metals that would
cause major problems whenever repairs were necessary.

My question is....

Are current aluminum technologies in place that would reduce the corrosive reactions that have existed in aluminum bodied automobiles?
Has Tesla taken steps to minimize the corrosive properties of aluminum?

I know that in the past aluminum bodied cars were notorious for experiencing corrosion at places where steel bolts were connected.
The electrolysis that occurs from combining two different metals would result in terrible corrosion/melding of the metals that would
cause major problems whenever repairs were necessary.

My question is....

Are current aluminum technologies in place that would reduce the corrosive reactions that have existed in aluminum bodied automobiles?
Has Tesla taken steps to minimize the corrosive properties of aluminum?

Click to expand...

They are running the cars through ecoat, which provides corrosion protection (among other things).

Thanks for the answers. Looks like electrophoresis coatings are about the best protection possible for the prevention of aluminum corrosion.
This bit of info adds to my comfort level in the investment that I have made in the Model S and Tesla Motors.